https-proxy: use IP address and cert with ip in alt names

- improve info logging when peer verification fails to indicate
  if DNS name or ip address has been tried to match
- add test case for contacting https proxy with ip address
- add pytest env check on loaded credentials and re-issue
  when they are no longer valid
- disable proxy ip address test for bearssl, since not supported there

Ref: #12831
Closes #12838

tests/http/testenv/env.py

@@ -31,6 +31,7 @@ import socket
 import subprocess
 import sys
 from configparser import ConfigParser, ExtendedInterpolation
+from datetime import timedelta
 from typing import Optional
 
 import pytest
@@ -133,7 +134,7 @@ class EnvConfig:
         self.cert_specs = [
             CertificateSpec(domains=[self.domain1, 'localhost'], key_type='rsa2048'),
             CertificateSpec(domains=[self.domain2], key_type='rsa2048'),
-            CertificateSpec(domains=[self.proxy_domain], key_type='rsa2048'),
+            CertificateSpec(domains=[self.proxy_domain, '127.0.0.1'], key_type='rsa2048'),
             CertificateSpec(name="clientsX", sub_specs=[
                CertificateSpec(name="user1", client=True),
             ]),